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Drylands Management, Organic Gardening, Sunseed News, Volunteer Stories

The first rains of the season have been and gone… and they have left their mark on the land here. Our beautiful poza looks different from last week, because the water swept through the valley, knocking caña aside and carrying with it the dust and soil from the surrounding hills. The hills themselves look so much cleaner, the plants have definable and separate colours, rather than all being coated in the fine dust, early mornings are sweet with soft dew, and even the air feels fresher.

Before and After the Storm

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We knew the rains were coming days before they arrived, though the amount of precipitation was often in question: We were told to expect 40mm to fall on Thursday, three hours later that had gone up to 100mm and 200mm on Friday but over the next day the prediction dropped to 40mm over 4 days, only to shoot back up to 100mm in 3 hours. The weather warnings for the area were Violet. So, understandably, we doubted the truth of the forecast once or twice. How could so much rain be coming when we were enjoying such glorious sunshine? Still, precautions were taken and we spent a morning preparing Sunseed for the likelihood of a heavy rain. Gabriel, our organic gardens coordinator led a team in sand bag collecting. They lugged the heavy bags from the gardens to the main street of the village where they built banks to protect the road from the floods of water. Tanks were positioned to collect the rain, so that we could make the most of the precious water, and where necessary buckets were placed to catch the leaks in the roofs.

The next day we watched as the rain clouds gathered at the edges of the valley, laden with their blessing of much needed water they drew nearer and nearer. Most people had found inside jobs to do during the day to avoid getting wet, and we sat around the house, trying to use as little electricity as possible. The clouds meant that the solar system wasn’t working at full capacity and once it dropped down to 90% we could not charge any devices, despite this the atmosphere around the main house was one of excitement.

Waiting for the storm

And then the rains came. They hammered, heavy and hard into the dry earth, the first few drops sending little flurries of dust into the air, until everything was soaked. It was only minutes before the main street of the village had become a river, flowing over our bare feet where we stood soaking in the water, just like the plants.

Soaking up the rain

In the evening the storm picked up. Lightning flashed across the sky, illuminating towering cloud formations and thunder rolled through our valley. We stood huddled in the doorway of one of the buildings, watching the water run down the main street. We laughted as we tried to avoid the rain, splashing through the streams and puddles and even pausing to dance under the torrent. That night, warm and dry once more, the rain beat a comforting rhythm against the roofs and, after a summer of heat, blankets were pulled from cupboards and onto beds.

On Friday in the pouring rain Gabriel, Tom, and our neighbour Dave Dene fixed the floodgates of the acequia with yeso, which sets underwater. So now all that we needed to do was clear the new mud from the acequia. Luckily, Saturday was the communal acequia maintenance day and we were joined by our neighbours to clear the acequia. We were up to our knees in the water channels scooping mud into buckets with our hands. Squeezing between caña and under hanging brambles we cleared the areas of the acequia that were worst affected by the rain and the silt that it had carried with it.

Cleaning the acequia

Once finished we trouped, muddy and tired, back to Sunseed’s main building. But, because the acequia wasn’t running yet, the village ram pump wasn’t working, and we had very limited water for washing. Using water collected from the rains we washed the mud from hands and faces and then settled in to enjoy our Saturday.

Later on, when the river was once again crossable, our drylands team went to find out what the rains had done to all of the hard work that has been poured into the area. We all wanted to know whether the walls had held or if the force of the water had knocked them away. To our delight, when the team came back, they had photos of the walls not only standing strong and proud, but having worked fantastically to slow and even stop the water. Areas of the drylands were all puddles and mud from the soil and water which had been stopped before it could flow away. It was cause for celebration and the main house was filled with our smiles of joy and relief.

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The heavy rains have gone now, but the season is turning from summer gently into autumn. Since the storm we have had small showers of rain, the ground is still damp enough that we haven’t had to water the gardens for the last few days, giving us an unexpected luxury of time. But it’s not only the weather that is different, the landscape has changed. The poza is now far more open and elongated, as most of the caña were swept away or flattened, it gives us a view further down the river that is more open. Sweetcorn that we have been nurturing and growing through summer was knocked down by the power of the storm. The ram pump is not yet up and running, but our wonderful maintenance team are working hard to get it operating. By now the turtles have returned to Rio Aguas and the silt is settling out of the river. The trees, plants and people are all refreshed and rejuvenated by the downpour.

The land love the rain
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Drylands Management

The term Bokashi comes from Japanese and it means a fermented organic matter. We chose to apply this technique for its several assets (developed later), but with some adjustments according to our resources available around us.

Basically, a Bokashi system need sources of Nitrogen, Carbon and other nutrients which will be fermented by Effective Microorganism (EM) with the help of sugar additions and material with porosity to enhance their growing.This technique provides fertilizers as a basic compost, it is very fast (around two weeks), and the final result is very close to a natural humus. It contains EM and the growth factor hormones added through a Fermented Plant Juice (FPJ) and a higher C/N rates than a compost. What better material can we ask for our work in soil regeneration in the Drylands Department?

So how did we make it? We used:

  • around 400kg of humanure mixed with
  • 100kg of soil
  • some straws chopped
  • ashes for the Carbon content (and also regulate the pH)
  • coffee grounds for the porosity and their nutrient content
  • diluted pee.

This is our appropriation of the Bokashi system; otherwise the best materials are rice bran hull, any manure, compost, garden soil and some molasses.

Peter preparing layers of the bokashi compost pile

Then we raised the humidity rate up to 60% by adding the water and a mix of EM, FPJ and sugar. Our EM had been home made with some soil harvested under canes and put in appropriate conditions to grow. This is called Indigenous MicroOrganism culture (IMO).

Finally we’ll have to follow the temperature of this mud cake during two weeks and turning it when needed (from 1 to 3 times a day) and eventually harvest the final product – the nutrients for the trees used in reforestation, made mainly from human output.

At Sunseed nothing goes to waste, especially our toilet waste. This week I had the opportunity to help build a Bokashi compost from scratch with Dimitri in the Drylands department. It’s quite an inventive process, using all natural material to create rich hummus in just 2 weeks!

It feels like a chemistry project; 3 litres of this, two tablespoons of that and hey presto we have soil. As we were building it Dimitri explained each step and why we do it, which really helped me understand how amazing a process it really is. Permaculture is revolution disguised as gardening!

Peter, short term visitor

For further information we can advise you to get a look at the “NATURE FARMING MANUAL. A handbook of preparations, techniques and organic amendments inspired by Nature Farming and adapted to locally available materials and needs in the Western Visayas region of the Philippines, Helen Jensen, Leopoldo Guilaran, Rene Jaranilla & Gerry Garingalao.” It has been our guideline for the Bokashi principles.

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Drylands Management, Organic Gardening

If you are interested in seeds conservation and wild plants, this post is probably for you.

An essential part of our drylands department is the regeneration of the local vegetation, through the collection and reproduction of wild seeds. We have a small but precious seed bank where we store seeds harvested in the area, so that we can sow them in the following planting season. I have been looking out for initiatives, companies or seed banks that could give us valuable inputs.

Last week we finally managed to reach Cordoba and meet Candido Galvez from Semillas Silvestres (Wild Seeds), a pretty unique company. Candido Galvez started ”Semillas Silvestres” 25 years ago, with the goal of producing native seeds and improving seed technology. Him and his 7 people team are working on the reproduction of trees, shrubs and mainly herbaceous species.

A crucial point is understanding what do they intend as native seeds. Native here is synonym of autochthonous.  ”Semillas Silvestres” doesn’t work with forestry species, neither with endangered species. They look mainly for neglected species, species with an unknown use (until now), but that are beneficial for biodiversity and the sustainability of agroecological systems.

Why conserving and reproducing wild seeds?

Candido and his team are hunting for the most interesting native species which could serve purposes of ecological restoration, landscaping, or agroecosystem sustainability. They have participated in multiple international and European research projects, lately focusing on the use of native species for soil erosion control in olive plantations (such as CUVrEN Olivar).

In order to select relevant species, ”Semillas Silvestres” uses a matrix, which matches the native species traits and the needs of the crops they will be working with, or the needs of the growers, depending on the situations. Some traits are extremely important, such as seed replicability: are the seeds I want to work with easy to reproduce? At what cost? Germination rates also need to be taken into account. I need to pick species which can be easily germinated, or again, easily enough, and at an acceptable cost. Also, can I actually conserve my seeds for longer periods? Some seeds, if dried, do not survive (recalcitrantseeds, as opposed to orthodox). This makes their conservation impossible. Finally, seeds with very low dormancy are also avoided. A dormant seed is like a ‘sleeping’ seed, waiting for favorable environmental conditions to sprout. Seeds with very low dormancy can be a very big problem for farmers as their germination cannot be controlled.

A seed journey

The seeds you buy from ”Semillas Silvestres” have actually not been collected in the wild. Candido and his team do not want to harvest everything from nature. This is because they want to protect the wild population, be more efficient in their production, and be able to implement technologies that couldn’t be used otherwise.

So they only collect the ‘parents’ seeds in the wild. In the harvesting process there is a clear difference between native seeds and commercial food crops. With native seeds there’s no such thing as selection, as the goal is almost the opposite: provide as much variety as possible. There are protocols followed in order to minimize the seeds selection, and to ensure that the sample collected represent the widest variety of characteristics of each species. The ideal situation would be a representation of all the variability that takes place in wilderness, in order to ensure larger success for the native species when grown in different contexts. For example when planting wild seeds for ground cover, the needs of each olive plantation are different: soils, rainfall, climate. That’s why genetic variety is an essential component.

The ‘parents’ seeds are reproduced in the plots of ”Semillas Silvestres” for a few years, until they have enough seeds to bring their product to the market. These plots are called Seed Production Areas (SPAs), a concept spreading all over the world, with the goal of sustaining the natural production of wild seeds, so that we can rely on a higher supply of these precious species, without actually affecting their natural environment. In the SPAs more efficient technologies of seed harvesting can be applied, to ensure larger production. Interestingly enough, seeds grown here are not organically certified, as an organic production is not cost-effective.

The harvested seeds are then dried and cleaned. Humidity is the first cause of viability loss, that’s why the drying process is one of the most important. We then move into the quality control room. Here viability, germination and purity of seed samples are evaluated. Viability basically tells us whether a seed is alive or not. A seed can be dormant but still viable, so still capable of germinating under the right conditions. This is why viability is in this case more important than germination rate.

Our journey ends in the storage rooms, with a pleasant smell of dry grass. Boxes and crates full of seeds ready to be shipped out fill up the walls. A great tip from Candido: as a general rule for basic seeds conservation, he advises us to always check temperature and humidity. Their sum should not be higher than 60. If you want to conserve your seeds properly, keep your moisture levels down, that’s easier and more cost effective than lowering temperature.

If you want to find more information about wild seeds conservation, give a look at the European Native Seeds Conservation Network (ENSCONET) website, where you can find harvesting and conservation manuals.

And now, back to our seedbank!

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Drylands Management, Sustainable Living

By Drylands assistant Margaux

With Spring in full bloom in the valley, the Drylands and Sustainable Living departments have been out walking with volunteers to collect the capers that are starting to grow and preserving them in preparation for summer salads. Have you ever picked capers? The pickled capers we use as seasoning are actually the buds of the plant called “Capparis spinosa”. They need to be picked before they turn into these lovely white flowers. It is preferable to pick the smaller buds which have more flavour.

It’s important to follow some basic guidance if you are planning to pick plants in the wild. First of all, make sure that you are not in a preserved zone.  There must be, at least, 5 plants of the same species in the area you are planning to pick. Then, do not collect more than 20-30% of the plant’s fruits or flowers, so it is still able to reproduce. Another last tip, try not to pick close to roads; you shouldn’t be closer than 50 meters from the nearest road.

“Its huge pink-and-white flowers  bristling with stamens and anthers, and its tough thorny leaves were nourished by roots that burrowed for moisture more than a hundred feet into the parched earth.” – South from Granada, Gerard Brenan

Preserving capers is simple –  to start off with you need just a water and salt mixture to soak them. This water needs to be changed every three or four days, four times. One the soaking process is done, you can preserve the capers in vinegar, and with any other herbs you like. Besides being a tasty addition to salads (or as a pizza topping at our famous pizza parties!) capers are known to be powerful anti-oxidants and to help in circulation of blood – so a perfect complement to our healthy sustainable diet here at Sunseed.

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Drylands Management

This year in the Drylands Department, we started work on a herb spiral in the Arboretum to demonstrate a water-efficient growing technique for dry areas. First initiated by our volunteer Ulrike, the herb spiral project had then been taken over by Giulia and Margaux – now we’re excited to say that the beautiful project is now finished!

Here in Almeria, the driest region in Europe, building such a spiral can present many benefits.

Efficient water usage

First, the spiral is designed in such a way that it retains the moisture at its base. This design allows a large variety of herbs to grow as it has both a drier zone at the top and a moist area at the bottom.  Our herb spiral will then probably see plants that don’t drink much, like rosemary, oregano and thyme, grow at its top part. The water management of the spiral is such that no water is wasted. The runoff water is collected and absorbed by the thirsty plants positioned at the bottom of the spiral.

Adapted to microclimates

In the same way, the spiral’s design also helps the herbs to benefit from diverse microclimates due to the variety of positions allowed : sunny, sheltered and shady. The top part of the spiral will then be perfect to grow herbs like rosemary, sage and thyme that prefer a sunny position, while the bottom part of the spiral will fit better to shade-loving herbs such as mints.

Heat retention

Besides, the stones used to build the spiral retain heat absorbed during the day, keeping the spiral warm when temperatures drop at night. Retaining the heat can be really useful in a semi-arid climate, where we usually face huge temperature gaps between daytime and night time.

A unique garden feature

More than a practical tool that allows to grow a variety of herbs under the best conditions in a dry area, the herb spiral is also of aesthetic interest. Inspired by nature itself, the design of the spiral ramp is irresistible to the eye and draws it as a focal point in the garden. The stones used for our spiral are carefully chosen to be aesthetically pleasing to our visitors’ eyes.

We’re looking forward to reaping the benefits of our herb spiral in delicious, flavoursome dishes in the months to come!

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Drylands Management

As an EVS volunteer, I wanted to look back over the last semester I spent in Sunseed as an assistant of Dryland Management Department. Originally coming from a completely different background, I had to learn everything from the very beginning. Before I leave and go back to my daily life in Paris, I wanted to share some parts of this fulfilling experience:

When I first arrived in February, Dryland Department was dedicating part of its time to planting different tree species on Allan’s land, as a part of its reforestation duty. Experimenting with carob trees, we could note after a couple of months that the place where the tree was planted had a crucial impact on its survival. Planting in the shadow and in the terraced part of the land look to have increased the chances of survival of the tree. We also observed that some of the species we planted, such as the Salsola oppositifolia, were more likely to survive in this arid environment.

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Cleaning behind the compostero

In April, Dryland Department initiated a long-term project which was to clean and improve the area of the “compostero” where is kept the hummanure compost next to the vivero. The idea was to provide more shadow to the compost in order to keep it quite moist during the heat of the Almerian summer. We first substituted all the trash stored behind the compostero with soil. We wanted to use this strategic spot to plant trees that will provide natural shade to the compost.

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Extracting Auxina from sprouted lentils

In May, Dryland Management department lead an experiment on the use of Auxina to help stimulate plants’ roots growth. The Auxina is a hormone naturally secreted by the plants and is known to help the stimulation of plant’s roots and speed up its development. We tried to extract some from sprouted lentils, getting a mixture out of the roots and water. The mixture was supposed to be ready to use after being kept 24 hours in the dark. Unfortunately, it turned out that the use of the mixture didn’t show any notable effect.

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Visiting Rodalquilar botanical garden

In June, Dryland Department drove a couple of volunteers to the botanical garden of Rodalquilar while the trees were still blossoming. The end of the spring was the perfect time to identify the different species thanks to their flowers. Rodalquilar’s botanical garden gives interesting details about the properties of the plants that grow all around the semi-desert of Almeria. The carob tree, for example, has been used for a long time, in the region, for its medicinal properties as syrup for coughing.The same month, the Dryland coordinator, Elena, helped with volunteers, ended the construction of a caña roof to the compostero, providing a bit of the indispensable shadow during summertime.

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Before and after with the caña roof

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Drylands Management

Life in the Drylands department has been busy over the last couple of months. In February we gathered a large amount of netting and sewed up the holes with yarn from our sewing box, to use as a cover for the tree nursery. Temperatures soar from May onwards, so we prepared a protective net, which provides shelter and shade for the seedlings as they grow.

Our volunteer Guilia has started to build a herb spiral in the arboretum that will contain cuttings from herbs grown in the gardens. This is positioned in a shady area but will get plenty of sunlight in the middle of the day. We had a communal activity to bring about 15 buckets of soil down from the area behind the main house to help her build the structure. She’s using rocks and old pieces of terracotta to line the growing edge of the spiral. Herb spirals make great use of vertical space by spiralling upwards instead of outwards, and make use of several microclimates around the mound.

The compost piles in the arboretum need frequent watering because the climate is extremely dry. To help keep the humidity in, we add organic matter from weeding in the arboretum and the wastewater systems, then add a protective layer, here out of cane leaves, but plastic as well if we have it.

Next in Drylands we’re going to make maps of the area and redo some of the signs and labels for the trees and nursery areas. They’re highly informative but in need of a revamp!

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The aquifer of the Aguas river is being overexploited by more than 330 %. The river itself is in great danger of disappearance. If this continues, this will mean the end of life for this unique ecosystem and also assume the end of many farmers livelihoods who depend on this water. In the meantime thousands and thousands of olive trees are being planted to be cultivated in a super intensive manner, which means selling the scarce water of the ecosystem in the form of olive oil. This precious resource is being hoarded by a few.

We are demanding this abuse to stop in several ways. One of these is to organise the population of the affected municipalities to propose social, direct and informative actions. Help us to spread the information about the next meeting in Sorbas, September 28.

Read more about the Ecocide of the Aguas River: http://ecocideelriodeaguas.org/

El aquífero del Río de Aguas está sobreexplotado en mas de un 330%. El Río mismo está en gran peligro de desaparición. Esto significa el fin de la vida de todo un ecosistema único protegido por el Paraje Natural, suponiendo el fin del proyecto vital para muchos agricultores que dependen del agua proveniente de ahí. Mientras tanto se están plantando miles y miles de olivos de manera super intensiva, vendiendo el agua del ecosistema en forma de aceite de oliva. Del recurso de todos se aprovechan unos pocos.

Estamos intentando parar este abuso de varias maneras. Una de ellas es organizar la población de los municipios afectados para proponer acciones sociales, directas e informativas. Ayúdanos a difundir la información sobre la próxima reunión en Sorbas, el 28 de septiembre.

Leer mas sobre el tema de Ecocidio del Río de Aguas: http://ecocideelriodeaguas.org/

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Drylands Management, Sustainable Living

We have been harvesting some carobs in three trees placed in Los Molinos del Río Aguas. We collected the fruits by hand but when they were not easily accessible we used a long stick to knock down the fruits to catch them in a net placed on the ground. Sometimes we even climbed like monkeys through the branches. In total we collected 90 kg of carob!

One of the carob trees we used for harvesting in Los Molinos del Rio Aguas
One of the carob trees we used for harvesting in Los Molinos del Rio Aguas
An acrobatic harvester!
An acrobatic harvester!

Some carob will be cleaned and the seeds stored in the seed bank of the Drylands Management Department. They will be used later during interventions for reforestation in lands affected by erosion and soil degradation. Others of these carobs will be sold to a pig-farm as pig-food as an extra-income for Sunseed Desert Technology. And finally, they will also be used by the Sustainable Living Department for cooking purposes. Because it is rich in natural sugars and has a kind of “chocolate taste” is a good local alternative to sweet foods. In addition, it has a lot of health benefits because of the important amounts of proteins, fibers, minerals and vitamins. Carob is used for its medicinal properties too, mainly for digestive health (protecting intestinal mucosa), or because of its high amounts of tannins, a powerful antioxidant, which helps combat premature cell deterioration (preventing cancer formation).

Carob fruit and seeds
Carob fruit and seeds

Hemos estado recogiendo algarroba de tres árboles que se encuentran aquí en Los Molinos del Rio Aguas. Parte de la algarroba la recogimos una a una pero cuando no podíamos alcanzarla zarandeamos las ramas con un palo para que cayera sobre una malla que previamente había sido tendida en el suelo. A alguno de nosotros le invadió la vena animal y como monos recogían el fruto! En total conseguimos reunir 90kg de algarroba.

Uno de los árboles de donde se recogió algarroba
Uno de los árboles de donde se recogió algarroba
Una voluntaria acróbata!
Una voluntaria acróbata!

Parte de la cosecha se limpiará y las semillas serán guardadas en el banco de semillas del Departamento de Tierras Áridas. Se usarán en un futuro en las intervenciones del departamento para reforestar parcelas erosionadas y/o degradadas. Otra parte de la cosecha se venderá como comida de animales, siendo un ingreso extra para Sunseed. El resto será usado por el Departamento de Vida Sostenible con fines culinarios. La algarroba se puede usar como una alternativa local para endulzar las comidas ya que es rica en azúcares naturales y tiene un sabor similar al chocolate. Además, tiene muchos beneficios para la salud por su contenido importante en proteínas, fibra, minerales y vitaminas. Ésta es también usada por sus propiedades medicinales, principalmente para el sistema digestivo ya que protege la mucosa intestinal, o por su alto contenido en taninos, antioxidante que ayuda a combatir los primeros signos del envejecimiento y el deterioro de las células.

Una vaina de algarroba y sus semillas
Una vaina de algarroba y sus semillas
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Drylands Management, Eco Construction

We have finally built the greenhouse for the seedlings from our nursery so they can spend the winter calentitas!

We are in a desert climate zone, so that the amplitude of temperature between day and night is quite large, and not only that, but the night temperature tends to be very low, causing frost. This situation is more pronounced in the botanical garden, as it is in a lower part of the valley, seriously affecting seedlings from the nursery.

In the nursery we germinated seeds that were collected during the past year for revegetation and regeneration of the area, and used as resources, such as carob. The seedlings that will be moved to the greenhouse are: albaida and albaidilla, genista, retama, black hawthorn and carob tree. Carob is the plant most affected by frost. The temperatures below 5 ° C can cause tree death, by the interruption of the flow of sap. Due to these reasons, we have built the greenhouse in the botanical garden, next to the nursery, in a sunny spot.

First, we have taken measurements of a similar structure from one of the gardens and adapted them to the space we have in the botanical garden. We dug a hole in each corner where the arches were placed and filled with gravel to support the structure, which once placed were covered with plaster and soil. The structure has been made with reed ​​(peeled and cleaned) using a very simple technique: two bunches of about seven reeds are joined together to make the main arches, adding reinforcements in the area of attachment. These are carefully placed with the ends in each opposite hole (not across!) clutching the arcs to maintain the position. Two other arcs are placed to and from the bases of the main arches, across this time.

Once the structure is in place, the doors are installed in the center of the main arches and attached to the ground like the arches are held.
Next, a trench is dug around the perimeter of the structure and the plastic cover is placed. This is tensed and is buried in the trench. Finally, the gates are placed and plants, etc are moved in to the inside of the greenhouse, and enjoy!

Greenhouse inside
Greenhouse inside
Greenhouse outside
Greenhouse outside

Finalmente hemos construido el invernadero para que las plantas de nuestro vivero pasen el invierno calentitas!

Nos encontramos en una zona de clima desértico, por lo que la amplitud de temperatura entre el día y la noche es bastante grande, y no solo eso, sino que la temperatura nocturna tiende a ser muy baja, provocando heladas. Esta situación se ve más acusada en el jardín botánico, ya que se encuentra en la parte baja del valle, afectando gravemente a las plántulas del vivero.

En el vivero hemos germinado las semillas que fueron recogidas durante el año pasado para revegetación y regeneración de la zona, y aprovechamiento de recursos, como es el caso del algarrobo. Las plántulas que moveremos al invernadero son: albaida y albaidilla, genista, retama, espino negro y algarrobo. El algarrobo es la planta que más se ve afectada por las heladas. Las temperaturas inferiores a 5º C pueden originar la muerte del árbol, por la paralización de la circulación de la savia. Por ello, el invernadero lo hemos construido en el jardín botánico, donde llega el sol todo el día y cerca del vivero.

Primero se tomaron medidas de una estructura similar de uno de los huertos y se adaptaron al espacio que tenemos en el jardín botánico. Se cavó un agujero en cada esquina donde se colocaron los arcos y se rellenaron con grava para apoyo de la estructura, y una vez colocada se cubrió con yeso y tierra. La estructura la hemos hecho de caña (pelada y limpia) usando una técnica muy sencilla: se unen ramos de unas siete cañas entre sí para hacer los arcos principales, añadiendo refuerzos en la zona de unión. Estos se colocan cuidadosamente con las puntas en cada agujero que tienen enfrente sujetándose los arcos para que mantengan la posición. Otros dos arcos deben de ser colocados desde y hasta las bases de los principales en forma de cruz.

Una vez la estructura esté colocada, se instalan las puertas en el centro de los arcos principales y se sujetan al suelo igual que los arcos.

A continuación, se cava una zanja en el perímetro de la estructura y se coloca el plástico que la cubrirá. Este se tensa y se entierra en la zanja. Por último, se colocan las puertas y se trasladan las plantas, etc, a su interior, y a disfrutar!

Invernadero por dentro
Invernadero por dentro
Invernadero por fuera
Invernadero por fuera
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